Lock nut



LOCK NUT Filed Aug. 17, 1943 zlgt 1 Innen far 17051577' /l F Ulli/177 01V 5y gm Patented Mer. 12, 194e 2,396,259

UNITED sTATes PATNT orrlca 2,396,259 LOCK NUT Robert Henry Fullerton, Binghamton, N. Y., as-

gror to Charles R. Stewart, Binghamton,

Application August 17, 1943, Serial No. lii98,934 2 Claims. (Cl. ll-20) This invention relates to improvements in loci: Incidental to effecting the cupped formation of nuts, and more particularly to such nuts as are the disc A', above referred to, the portions of said suited for use as lock-nuts, lock-washers, asdisc adjacent to the slit C therein are brought teners, spacers, clips, or the like. into overlapping relationship, as indicated in Figs.

vit is an object of this invention to provide nuts. 1 and 2, with resultant decrease in the size of the or the lille, which can be quickly and conveniently opening B'. applied over the threaded ends of screws or over After being thus decreased, such opening should correspondingparts of studs or rivets, and such be appreciably smaller than any screw, rivet or that, when so applied, they will dependably resist stud upon which it is intended that the nut or disengagement therefrom, even when subjected 1o washer should be secured. Because of the resilto vibration. iency oi the material, a given nut or washer will lit is a further object to provide nuts, or the he suitable for application to studs of any one of like, oi' a form such that, when so applied, they several sizes.

will resist rotational movement relative to the 1t should be understood that the word stud as. surfaces against which they are applied. hereinafter used, is intended to include any pro- With the foregoing objects in view, this invenjectng part, Whether 0f a screw, bolt, rivet 01 tion consists of the novel features of which illusother object, and which (unless otherwise extrative forms are hereinafter described, and which pressly stated) may or may not be threaded. are pointed out in the sub-joined claims, and in- The relationship of the overlapping portions of dicated in the annexed drawing, in which: 2o discs intended for mounting upon the threaded Figure l is a side elevation of a lock-nut or portions of intended screws or studs should be washer embodying general features of this inventhat which will facilitate their conformity to the tion; pitch of such threads; and discs intended for Figure 1a. is a top plan view of the lock nut or such mounting should be of material sufficiently washer; thin so that such walls will readily so conform Fig. 2 is a perspective view of the concave side and will be suitable for entering spaces betweenl of the nut-washer of Fig. l; such threads.

Fig. 3 represents a pierced and siitted disc As best indicated in Fig. l, a corner D of a wall from which the nut-washer of Figs. 1 and 2 may 0f the slit C projects beyond the general P19116 0f be formed; 3o the concave side oi the disc A, for engaging the Fig. i represents the nut-washer of Figs. l surface to which the disc is to be applied. fOr the and 2 applied in cooperation with a screw serving purpose of frictionally resisting rotation relative to attach a channel piece to a plate;v thereto.

Figs. 5 and 6 represent modifications to be re- Best results will be obtained if the corner so ferred to; and projecting is the one which will most eiiectively Figs. 7, 8 and 9 are illustrative of methods of resist rotation in the direction which will carry applying this invention to various types of clips the disc along an intended screw thread away and fasteners. from the surface against which it should be In Figs. l and 2, A represents a cupped look clamped. Thus, in the instance of the disc indinut or washer of thin resilient material and new- 4o Gated in Fig. 4, the right hand one of the overingaoentrel aperture B, lapping portions is outermost, and a corner oi Such nuts or washers may be produced by imthat portion is shown as having somewhat buried parting a cupped formation to flat discs such itself in the material of the channel piece E, so as the disc A' indicated in Fig, 3; which disc has as to resist rotation in the direction which should a substantially central aperture B' pierced there- 45 Carry the dSC away from Sad Channel Piece 0n 2 through, and is slitted at C from the aperture B' Screw having a right hand thread. For Correto the edge of said disc. After being so slitted, SDOndiIlg DOStiOllg With relation to a screw havsuch a disc might be termed a strip." Furtherine a left hand thread. the left hand Overlapping more, instead of utilizing such disc-like strips. POIOD Would be 01lt1`m0St.anditS Corner Should strips of more or less rectangular shape may .be project bevond the general piane of the concave deep cupped formation is needed. corners of both 'walls of the slit correspondingly disposed in the form of washer-like cupped discs, Side of the disc. and more or less penetrate the as indicated in Fig. 6; the use of such rectangular I SurfaCe Gf. the Channel DeCe E- strips, instead of disc-like Stripsbeing'likely to be It Will be evident that. Under SOme Cilllm specially` advantageous when an exceptionally stances, it may be found advantageous to have' project, and that such an arrangement may be readily provided.

lFor uses where it is lock-nuts or Washers rial to which they are applied ever, for uses such that the tendency to strip off from screws or studs is comparatively slight, such overlap may be dispensed with; as by providing a, wide slit at C.

2. A lock nut as described in claim 1 in which the locking element is a serrated edge on the base of the nut.

ROBERT H. FULLERTON. 

